if a person or an organization is rotten to the core, it behaves in a way that is not honest or moral.

The whole legal system is rotten to the core.

• rock to its foundations
• roll around
• roll back
• roll back something
• roll back the clock
• rolled into one
• roller-coaster
• roller coaster
• roll in
• rolling in
• rolling in something
• rolling in the aisles
• roll in the hay
• roll off the tongue
• roll out
• roll out something
• roll out the red carpet
• roll out the red carpet for
• roll out the red carpet for someone
• roll over
• roll over in grave
• roll over in someone's grave
• roll over something
• roll sleeves up
• roll up sleeves